Expanding reel bar or core for use in winding and unwinding paper, cloth, and like material.



- S. MILNB. EXPANDING REEL BAR 0R CORE FOR USE IN WINDING AND UNWINDINGPAPER, CLOTH, AND

LIKE MATERIAL.

APPLICATION FILED APR.5, 1913. 1 122 21 Patented Dec. 29, 1914, aSHEETS-SHEET 1.

./b 33%;? @2411- g 2 r t spindle to the shell or vice versa.

UNITED STATES PATENT oFFIoE.

SAMUEL MILNE, 0F EDINBURGH; SCOTLAND.

EXPANDING REEL BAR OR CORE FOR USE IN WINDING AND UNWINDING PAPER,CLOTH, AND LIKE MATERIAL.

Specification of Letters Patent.

Patented Dec. 29,1914.

, Application filed April 5, 1913. Serial No. 759,156.

-Ireland, and resident of Edinburgh, Scotland, have invented certain newand useful Improvements in or Relating to Expanding Reel Bars or Coresfor Use in Winding and Unwind'ing Paper, Cloth, and like Material, ofwhich the following is a specification.

'This invention relates to and consists of an improved construction ofexpanding reel bar or core for winding or unwinding pa per, cloth andthe like.

According to the invention the improved bar or core consists of aspindle or shaft formed along its entire working length, or atintervals, with one or more facets or clutch surfaces.

It also consists of one or more rods or rollers which on the bar or corebeing slipped into the reel or reel shell lie between the facets orclutch surfaces and the reel or shell. l

With the reel or shell held stationary and the spindle given'a partialrotation the rollers bind against the spindle andthe inner face of thereel or shell and thus clutch the On giving the spindle a partialrotation in the reverse direction with the reel held stationary therollers free the spindle andallow it to be withdrawn.

Upon the accompanying drawing, Figure 1 illustrates an end view showingthe application of the invention to a reel. Fig. 2 illustrates a' sideView, (partly broken away) of the core or spindle. Figsi g to 7illustrate modifications.

a is the reel within which or its shell a the expandible core or spindleis placed when requiring to wind or unwind paper or other material on toand off the reel. The expandible core or spindle, as shown, consists ofa shaft 'or spindle 1) formed with longitudinal recesses b one part .ofeach of which is deeper than the other-parts and each recess thusproducing an inclined clutch surface 6 The recesses will preferablyextend the full working length of the shaft 6 as shown in Fig. 2. Withthe shaft or spindle inserted in the reel, or reel shell a series ofcircular rods or bars 0 are placed one in each recess 7), the rods orbars normally lying within the deeper part of each recess. It should nowbe seen that on rotating the core or spindle b, in the direction of thearrow (1, and with the reel olfering a resistance to rotation, the rods0 will becomewedged between the inclined faces 6 and the inner surfaceof the reel shell a and thus lock or clutch the core to the reel, whichwill then rotate with the core so long as it is rotated in the samedirection. WVith i the parts arranged, as shown, and rotating n thedlrectlon of the arrow d the spindle '1s adapted for winding purposes.On the reel being held stationary and the spindle given'a slightrotation in a direction opposite to that ofthe arrow d, the rods 0become freed or released fron hthe reel and move into the deeper partsofthe recesses 79' the core 6 and 'rod'so being then ready to be removedif required' When the core or spindle is required for unwinding purposesand the unwinding has to be done positively the shaft will be withdrawnand inserted the reverse way. Of course, when the reel has to be unwoundby merely pulllng the *material off the spindle need not 'be reversed;The spindle may be provided with a gearwheel and be formed with asquared end for the reception of a handle or the like for turningpurposes. In'addition to serving to clutch the-reel shell to the spindlethe invention allows of the .same

bar or core being used with shells of different diameters.

' WVhile showing three recesses and three rods, it will be understoodthat there may be less or more according to the size of expander.Further, the inclined faces 6 may extend only part of the way along theshaft 1) from one or both ends and the .rods be of correspondinglengths, but usually they will be made as described and sliown. Alsothere may be end plates on the shaft with inclined slots correspondingto the inclined. faces by which the rods or rollers would always be keptintact with the shaft.

In Fig. 3 the recess b and rollers c are shown with flutings or teeth,whereby the roller may. be rotated to engage or disen-.

shown held in its recess by a spring blade 1, consisting, say,of a verythin piece of brass or steel, preferably, extending the Whole length ofthe body of the bar or core. In

- this example the rods or rollers will lie bestraWbQardOr other shell,the winding-on being commenced when the rods or rollers and blades arein the position shown by dotted lines in Fig. 4. With the reel wound therods or-rollers could be rotated by means of a wrench or other suitablemeans to the inner position, as shown by the full lines in Fig. 4, andthe blades will then collapse or retract and permit of the bar orspindlebeing removed.

only and such rod may be held to the spindle by a thin flexible coveringor sleeve 9 loosely encircling the spindle. lhe clutch surface and rodmay be plain or fluted. In this as in the other arrangements the clutchsurfaces may end in a small shoulder at b by which the roller will beprevented leaving the clutch surface when moved to the extreme position.In lieuof the recesses b the spindle may beformed with'flats see Fig. 6and thus be adapted to operate (become clutched or unclutched) in eitherdirection of rotation. When the reel shell will allow of it the recessesmay be inthe shell, and the shaft be circular, see Fig. 7.

"and of a diameter slightly less than the internal diameter of the usualshell of the reel and having recesses on its periphery extending fromend to end, a portion ofthe, faces of each recess being eccentric to theaxis of the core, and rods or rollers lying in such recesses, as s etforth.

2. In means for winding and unwinding paper, cloth and the like in .webform,,in'

combination, a bar or core comprising a par- 'allel-sided central partand two end parts of smaller diameter than the central part, and Asshown in Fig. 5 there may be one rod said central part being equal inlength to the width of the web of paper or cloth, and having a recess onits periphery extending from end to end, a portion ofthe face of suchrecess being eccentric to the axis of the core, a thin flexible sleeveencircling thesaid central part of the core, and a rod between FREDERICKPIATT, Gnomes HITELAW,

